scholarly journals Hydrogen evolution activity tuning via two-dimensional electron accumulation at buried interfaces

2019 ◽  
Vol 7 (36) ◽  
pp. 20696-20705 ◽  
Author(s):  
Yudong Xue ◽  
Zachary S. Fishman ◽  
Yunting Wang ◽  
Zhenhua Pan ◽  
Xin Shen ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Hydrogen Evolution ◽  
General Strategy ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Buried Interfaces ◽  
Electron Accumulation ◽  
System P ◽  
Bimetallic Sulfide ◽  
Kinetics Of

The buried electrocatalytic interfaces between bimetallic sulfide nanosheets and ALD TiO2 coatings achieved remarkable HER activity improvement, offering a general strategy for improving the charge-transfer kinetics of an electrocatalytic system.

Charge transfer in an inhomogeneous two-dimensional electron system in the arrangement of Laughlin’s gedanken experiment

1993 ◽  
Vol 48 (11) ◽  
pp. 8480-8482 ◽  
Author(s):  
V. T. Dolgopolov ◽  
A. A. Shashkin ◽  
G. V. Kravchenko ◽  
S. I. Dorozhkin ◽  
K. von Klitzing
Keyword(s):  
Charge Transfer ◽  
Electron System ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Gedanken Experiment ◽  
Dimensional Electron System

Polarization and charge-transfer effect on the transport properties in two-dimensional electron gases/LaNiO3 heterostructure

2018 ◽  
Vol 112 (2) ◽  
pp. 021601 ◽  
Author(s):  
M. J. Chen ◽  
X. K. Ning ◽  
Z. J. Wang ◽  
P. Liu ◽  
S. F. Wang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Transport Properties ◽  
Transfer Effect ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Electron Gases

scholarly journals Extreme mobility enhancement of two-dimensional electron gases at oxide interfaces by charge-transfer-induced modulation doping

2015 ◽  
Vol 14 (8) ◽  
pp. 801-806 ◽  
Author(s):  
Y. Z. Chen ◽  
F. Trier ◽  
T. Wijnands ◽  
R. J. Green ◽  
N. Gauquelin ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Modulation Doping ◽  
Electron Gases ◽  
Oxide Interfaces

Mobility Modulation and Suppression of Defect Formation in Two-Dimensional Electron Systems by Charge-Transfer Management

2017 ◽  
Vol 9 (12) ◽  
pp. 10888-10896 ◽  
Author(s):  
Felix Gunkel ◽  
Ronja A. Heinen ◽  
Susanne Hoffmann-Eifert ◽  
Lei Jin ◽  
Chun-Lin Jia ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Defect Formation ◽  
Two Dimensional ◽  
Electron Systems ◽  
Dimensional Electron ◽  
Two Dimensional Electron Systems

scholarly journals Kinetics of Hydrogen Evolution on Copper Electrode Involving Organic Acids as Proton Donors

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
A. Survila ◽  
S. Kanapeckaitė ◽  
J. Pileckienė ◽  
J. Būdienė
Keyword(s):  
Charge Transfer ◽  
Hydrogen Evolution ◽  
Total Concentration ◽  
Surface Concentration ◽  
Sweep Rate ◽  
Copper Electrode ◽  
Linear Potential ◽  
Potential Sweep ◽  
Proton Donors ◽  
Kinetics Of

Linear potential sweep (LPS) voltammetry was applied to study the kinetics of hydrogen evolution in solutions containing glycolic, malic, tartaric, and gluconic acids. The CE mechanism of hydrogen evolution was analyzed invoking the 2nd Fick's law equations supplemented by terms that account for chemical interactions between diffusing particles. Acids are considered as components that are capable of releasing hydrated protons taking part in the charge-transfer step. Current peaks observed on LPS voltammograms are in linear dependence onν(νis the potential sweep rate). They obey well-known relationships obtained for simple redox processes, provided that the concentration of oxidant is treated as total concentration of proton donors. Determination of surface concentrations as current density functions makes it possible to transform LPS voltammograms into linear Tafel plots normalized with respect to the surface concentration of hydronium ions. Similar kinetic parameters (α≈0.6andi0≈10 μA cm−2) obtained at pH 3 for all OA solutions indicate that the nature of OA has no noticeable influence on the charge-transfer process.

scholarly journals Controlling magnetoresistance by tuning semimetallicity through dimensional confinement and heteroepitaxy

2021 ◽  
Vol 7 (16) ◽  
pp. eabe8971
Author(s):  
Shouvik Chatterjee ◽  
Shoaib Khalid ◽  
Hadass S. Inbar ◽  
Aranya Goswami ◽  
Taozhi Guo ◽  
...  
Keyword(s):  
Thin Film ◽  
Electronic Structure ◽  
Charge Transfer ◽  
Band Structure ◽  
Quantum Confinement ◽  
Model System ◽  
General Strategy ◽  
Two Dimensional ◽  
A Charge ◽  
Structure Engineering

Controlling electronic properties via band structure engineering is at the heart of modern semiconductor devices. Here, we extend this concept to semimetals where, using LuSb as a model system, we show that quantum confinement lifts carrier compensation and differentially affects the mobility of the electron and hole-like carriers resulting in a strong modification in its large, nonsaturating magnetoresistance behavior. Bonding mismatch at the heteroepitaxial interface of a semimetal (LuSb) and a semiconductor (GaSb) leads to the emergence of a two-dimensional, interfacial hole gas. This is accompanied by a charge transfer across the interface that provides another avenue to modify the electronic structure and magnetotransport properties in the ultrathin limit. Our work lays out a general strategy of using confined thin-film geometries and heteroepitaxial interfaces to engineer electronic structure in semimetallic systems, which allows control over their magnetoresistance behavior and simultaneously provides insights into its origin.

ADSORPTION KINETICS OF POTASSIUM ON SrTiO3(100)

2006 ◽  
Vol 13 (05) ◽  
pp. 681-686 ◽  
Author(s):  
E. E. MORI ◽  
M. KAMARATOS
Keyword(s):  
Charge Transfer ◽  
Elevated Temperature ◽  
Energy Level ◽  
Adsorption Kinetics ◽  
Room Temperature ◽  
Two Dimensional ◽  
Leed Pattern ◽  
Maximum Coverage ◽  
Kinetics Of

In this paper, we study the kinetics of potassium adsorption on SrTiO 3(100) surface at room temperature. The study took place in UHV using AES, EELS, LEED, TPD, and WF measurements. Potassium grows in two-dimensional islands with maximum coverage of 3.9 × 1014 at/cm2. During adsorption charge transfer from the K -4s to Ti -3d energy level has been observed. No K – O compound has been measured. After heating at 1050 K most of the adsorbed potassium desorbs and the SrTiO 3(100) (1 × 1) LEED pattern reappears. There is not any indication of potassium intercalation into the substrate, either at room or at elevated temperature.

Designed Borophene/TMDs Hybrid Catalysts for Enhanced Hydrogen Evolution Reaction

2021 ◽  
Author(s):  
Yuxing Lin ◽  
Mingxin Yu ◽  
Xiaoyan Li ◽  
weicheng gao ◽  
Licheng Wang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Electronic Properties ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Two Dimensional ◽  
Hybrid Catalysts ◽  
Potential Applications

Interlayer charge transfer in heterostructures plays an important role in tuning the electronic properties, which opens a new avenue for potential applications of two-dimensional nanomaterials. In this work, the hydrogen evolution...

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